US 12,224,093 B2
Multilayer magnetic sheet
Yasuo Kuriyama, Tokyo (JP); Kouhei Miyano, Tokyo (JP); and Yuichi Ogawa, Tokyo (JP)
Assigned to PROTERIAL, LTD., Tokyo (JP)
Filed by PROTERIAL, LTD., Tokyo (JP)
Filed on Apr. 4, 2023, as Appl. No. 18/295,561.
Claims priority of application No. 2022-064700 (JP), filed on Apr. 8, 2022.
Prior Publication US 2023/0326639 A1, Oct. 12, 2023
Int. Cl. H01F 1/16 (2006.01); B32B 7/12 (2006.01); B32B 15/01 (2006.01)
CPC H01F 1/16 (2013.01) [B32B 7/12 (2013.01); B32B 15/011 (2013.01); B32B 2307/208 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A multilayer magnetic sheet comprising:
at least one first layer in which a plurality of magnetic strips each formed in a band shape having a short side and a long side and each provided with, on one surface thereof, an adhesive layer, are arranged such that the long sides are adjacent to each other to be arranged in a plate shape;
at least one second layer in which a plurality of magnetic strips each formed in a band shape having a short side and a long side and each provided with, on one surface thereof, an adhesive layer, are arranged such that the long sides are adjacent to each other to be arranged in a plate shape, a direction in which the long side of the at least one second layer extends intersecting a direction in which the long side of the at least one first layer extends; and
at least one third layer in which a plurality of magnetic strips each formed in a band shape having a short side and a long side and each provided with, on one surface thereof, an adhesive layer, are arranged such that the long sides are adjacent to each other to be arranged in a plate shape, a direction in which the long side of the at least one third layer extends being the same as a direction in which the long side of the at least one first layer extends; wherein
a position of the long side in the at least one first layer and a position of the long side in the at least one third layer are separated from each other by 0.5 mm or more in a direction in which the short side extends,
the adhesive layer includes a support formed in a band shape and an adhesive provided on a first surface and a second surface of the support,
on each of the at least one first layer, the at least one second layer, and the at least one third layer, the supports in the adhesive layers are arranged side by side along a direction in which the plurality of magnetic strips is arranged, and
a direction in which each of the supports on the at least one first layer extends intersects a direction in which each of the supports on the at least one second layer extends.